High strength and lightweight silica insulation refractory bricks are suitable for glass furnaces, high temperature insulation, high temperature industrial furnace special refractory materials

Name: High strength and lightweight silica insulation refractory bricks are suitable for glass furnaces, high temperature insulation, high temperature industrial furnace special refractory materials
Rating: 5.0 (50 reviews)

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Product Parameters

The main parameters

Item	QG-0.8	QG-1.0	QG-1.1	QG-1.15	QG-1.2
SiO ₂ %	≥88	≥91	≥91	≥91	≥91
Bulk density (g/cm3)	≤0.85	≤1.00	≤1.10	≤1.15	≤1.20
Compressive strength at room temperature (MPa)	≥1.0	≥2.0	≥3.0	≥5.0	≥5.0
Softening temperature under load (T0.6) 0.2MPa	≥1400	≥1420	≥1460	≥1500	≥1520
Reburning permanent line change rate (%) 1450℃X2h	0 to +0.5	0 to +0.5	0 to +0.5	0 to +0.5	0 to +0.5
20－1000℃ Thermal expansion coefficient (%) 10-6/℃	1.3	1.3	1.3	1.3	1.3
Thermal conductivity (W/MK) 350℃	0.55	0.55	0.60	0.65	0.70

Product Details

Product Introduction

Silica insulation bricks are a high-quality refractory material primarily composed of high-purity silica, manufactured through precision molding and high-temperature sintering. With a silicon content exceeding 91% and a bulk density below 1.2 g/cm³, they can operate stably in continuous high-temperature environments of 1500–1550°C and possess excellent thermal insulation, thermal shock resistance, and mechanical strength. Their extremely low impurity content significantly reduces heat loss and improves energy efficiency, making them widely used in high-temperature industrial applications such as glass melting furnaces, hot blast furnaces, coke ovens, and carbon forging furnaces. These bricks meet international refractory quality standards and have been exported to numerous countries and regions, including Europe, America, the Middle East, and Southeast Asia, earning them the trust of manufacturers worldwide. We are dedicated to providing stable and reliable high-temperature energy-saving solutions to our global customers, helping them reduce operating costs and achieve green and sustainable development.

Advantages and features

1. Silicon content exceeds 91%, with strong high temperature stability and no deformation after long-term use;
2. Density is less than 1.2g/cm³, light weight, easy installation, and significant energy saving effect;
3. Fewer impurities and low thermal conductivity effectively reduce heat dissipation from the furnace and improve thermal efficiency;
4. High compressive strength, suitable for heavy-load applications under complex working conditions;
5. Comply with international environmental protection and safety standards, suitable for high-temperature equipment in multiple industries.

Application Scenario

It is suitable for high-temperature industrial furnaces such as glass melting furnaces, hot blast furnaces, coking furnaces, calcining furnaces, etc. in the glass manufacturing, metallurgy, chemical industry, ceramics, carbon and other industries. It is mainly aimed at global industrial customers, including refractory material distributors, engineering contractors, factory equipment procurement departments and overseas project integrators.